chicken raised for food and cancer

I joined a little co-op today. The family buys and raises chickens for the group as a food source. They are free range, and eat well...and seem to be really healthy. I helped clean and dress about 100 today. Two of the chickens had cardiac tamponade (fluid around the heart in the sack) and the one I took home had a horrible looking tumor in the breast at the bone. I have a picture and video. Is this a normal occurrence in 100 chickens and I just got lucky? I have to admit it set me back a little.

I joined a little co-op today. The family buys and raises chickens for the group as a food source. They are free range, and eat well...and seem to be really healthy. I helped clean and dress about 100 today. Two of the chickens had cardiac tamponade (fluid around the heart in the sack) and the one I took home had a horrible looking tumor in the breast at the bone. I have a picture and video. Is this a normal occurrence in 100 chickens and I just got lucky? I have to admit it set me back a little.